Automobile brake



N. NIL-SON ET AL AUTOMOBILE BRAKE Filed Sept. 21. i922 /Y/ lso-n F 14 Nikon B counly oi Application filec? September 561 1822 To all whom it may concern-x Be it known that We, Nine Kinson and FREDERICK V 7. Fins-N, bGi'll cilizens oi? the Uniied residing at ll orcester, in the l orcest-er and Stole of Iiiassuchusells have invented new and useful Auto mobile Brake, of which the following is a specification.

This invention relates to a service brake 10 for an automobile.

The principal objects of the invention are to provide a brake of such a nature that it can he applied quickly and all the friction surfaces will come into contact sinuullaw3 ously, thus avoiding unevenness wear; to provide a brake which will wear evenly and uniformly; to provide a conslrucl'ion which will be without side thrust and ill not as rapidly as the operator may desire; to provide a construciion which can be located conveniently under the rear purl of the vehicle Where it will take up no room otherwise occupied. and Where it can he left open for cooling by air convenientl or ClOL-Kll $0 excliule {lush of the i uiion will appear i'iei'oinu fler.

is to be hucl lo *ihe accompany in o" drei in ii-'hichsi e 7 showing 3 pleierieci QllTll)()Llll11Q-Eli oi 'lhii invention applied thereto; i

Fig. 9, is o seclional ViGW of she liiicrenlial shaft showing the broke in side elevation on enlarged scale;

3 is ii central sectional views of the device;

Fig. is plan, a "u Fig. is a sectional View showing inoclificntion.

in orderto provide ii brake having the above mentioned advantages the master 10 on the main shaft 11 is used to drive a second bevel gear 12 filial is from one-half to one-third the size of the gear 10. The gear 12 is mounted on a vertical shaft- 13 mountecl in ball bearings M- on the ion of ill: differential casing 15 preferably. This vertical shaft is provided Willi. ihllOllZOlli'ill circular friction plate 16 at its top. This can be fixed lo the shell in any desired way so as to rotate positively Willi it.

0n the top 15 we provide guide pins 17 shown as located Vertically. Around them We place springs 18 which carry :1 plate 19 above them having perforations through Usher objects and :ivanlages ilen'rj. "No. 589,680.

which the pins 17 pass and by which the plate 19 is guided to move vertically. Through this plate passes a vertical stud 2O centrally located and having supported. underneath it a freely rotatable friction disc Slicenierecl with respectto the disc 16 and of the same size. These discs both consist of steel plates and the disc 21 is provided with a circular layer of friction material 22 including asbestos. his also is preferably of annular form. The layer onone side adapted to come into contact with the plate 19 above and on the other side with the disc 16 below. The springs 18 normally hold llie plate lflu so that the twodiscs are not in contact. @referably the device is designed so that ordinarily there will be a clearance of about of an inch hetween the two discs 16 and 21.

The plate 19-is provided with ii pair of bolts or the like in alignment at the opposite sides on which are pivoted a pair of links 26. the ends of rlie pair of levers 27 which are pivoted on two opposite studs 2- and carry at their ends pins 28. To these pins 28 are pivot iily connecleil links which operate no arms fire on or 15s rod 31. A central arm 30 on this rorl is connected by a link 32 Fii'li e bell crank nee ihe from of the our to the opposite arin of'which is connected the brake nodal 36%. I

ll hen the operzzlior wishes toistop the car he presses as usual on the pedal I 4;

link 32 in ihe direction of the arrow in Fig. 2, swings up the hell oranl; 30 end the link 29. This acts through the levers 27 to pull clown on the links 26 and depress the plate 19. The action of this is to force the disc-21 on the under side of this plane rlown into containwith the constzintl rotating (l' 1G and clump this disc :21 h disc 16 and {lie stationar plate 1.9. This applies friction all over the surfaces of these discs and imineiiietely slows up the operating shafts and stops the machine in a quick but smooth manner. After he plate is forced down hard the discs will still fol-ate a port of a revoluiion before coming to a full slop, so the action will not be absolutely instantaneous.

The surfaces on which the friction is exerlecl are flat and he Ye such relation to each other that they will necessarily wear unillh cse links are in lurn pivoted to depresses the bell crenk 33 and draws the v on ihe rotating 'forimy and there can part of these surfaces thee Wiii not receive its due propor tion of wear. Therefore, these surfaces will remain fiatsftei' iong use, thus eliminating one of the important, objections to he ordinary circular friction. brake. Furthermore, the parts are so arranged sheiif it is necessary to disconnect chem for cieening or inspect-ion or any other purpose thee be done simply by removing the and taking out the plate 19 which lea-Wes everything exposed. The'e will OI'CiiIlkLi y be no necessity for adjustment, but after amount of wear scijsssments can he pro? vided for at anv convenient point in the leverage. The L evic is designed so the leverage che same on both side herefore adjustment will no he imtii she device is ii out, The whole device is open so that cm'i fiaii cii emission. there is about ii. I i iuhricsiaionend is so srreiig eii that tectioii from dust more mi icifemt than A v u 1 the cii'cuistioi: oi air he skies can he cioseii very eesiiy,

in this brake the as estos Ii/iii iiiiveys free from grease which is cc'nse oi" much ii'ouoie in the fbmi-zes of emergency this hmiie has power enough to lock the wheels and serve as emei' 'e icy sreke end it can he izeps in gooii coi ,iiiicn by the owner which saves both izime smai money. i

it will be understood, course, that the friciion discs Wiii he designed for the particular size moi weight of the can on which they to used. anti it wiii he oiivious that compcmciveiy smsii discs be ex 1- ployed es the friction pi oviiimi on both. sides and is necessarily provided thioiigghcuii the entire areas cf the iiicici'icn Even. if these surfaces are not irue when is set up they will be worn ifihioug; "ion '13 I y of the device and fshere is no i which they can be worn so es reduce me iiicrioii ares unless grim oi" the iiiae these surffi'icesw For small omitted es in TIM'JJNBQR the upper disc can he shown in i 5 and then the friction between the lower disc 1%? and the non-rotatable plate is rehec upon. The hiiiicm oi? she piste wouid then heve c frie 'Eion surface 21 iike that on. the upper disc in Fi' 3,

Although We have shown end described only a single form of the iii-ventiozi and shown it as appiiefi to oz'iiy one kind 0.? chine We are avvece of the fact time incdi iicstioiis be mele therein by any person skilled in the art without departing from the-scope of the invention expressed in the claims.

Therefore we do not wish he limits co all iihe details of construction herein shown and described but what we do cieim is 1. 31 a brake for an automobile, the combinasion with a circular fiat disc positively connected with the rlriving mechanism to :0- tete whenever the car is moving, of a circular discof the same size and shape noriiieliy supported a siighi; distance from it and, freely rotatable on its axis, a, reciprocable noniotambie plat-e beyond the second disc, end means for moving the plate To bring the seconci disc into contact with the first disc to apply the friction.

2. In a biahe the combination of a horisocial disc pcsisiveiy connected to e iop thereof, 21 fies piste mounted above said ciisc capable of moving in an axial direction cwerd it 2, second disc i'ieeiy mounified to use on the lower side oi? said plate and having a fist friction surface on each side and means for moving she plate downward to bring the said iiscs into contact and press the upper disc into contact with the hotioin of seici piste for the purpose of sppiyin'g a friction to resist the rotation of the lower disc end the driving shaft of the car.

3. a for an automobile, the combination of e horizontal fiat ciisc located over the rear s de and positively comiectedi to it to rotate with it in, a higher speed and having friction surface on. the sop ihei'eof, e piste mounted above said disc capable of moving ii en axis direction toward it, a

seconci disc freeiy moimced to ism on the ioiver side of said piste and having a fist friction surface on each side, means for moving she plate downward to bring the said discs into cohiact and press the upper into cemec with she bottom of said piste for the piii'giose of sppi in? a friction is i'esi; rotation of the Lower disc ena'i the driving she-fit oi the cs1, guicies mounted under the rear of the cs for guiding said pieile to move in e, Cii'QfJi-iflll directly coward the iov disc, and yieii'iing; means for moi-- meily holding said, place up prcvide s clearance between the ewe discs.

ii. in a brake" the combination oi ii horizontai fist disc cositiv connected to am driving shaft to i'omize with it as a higher speed, a fist piste mounted above said ciisc capable o1. movii 'g in an axial direction 20' 'wari it, and means for moving the piste fiQ'W'i'lWaZii to press the disc into contact with the bottom of said pins-e for the purpose of applying a friction to i'esistthe rotation of izhe disc and she driving; shaft of the car.

in tesiimony Whereoi we have hereunto eiiixeci our signemi'es. 

